CN101725711A - Spacer - Google Patents
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- CN101725711A CN101725711A CN200910206579A CN200910206579A CN101725711A CN 101725711 A CN101725711 A CN 101725711A CN 200910206579 A CN200910206579 A CN 200910206579A CN 200910206579 A CN200910206579 A CN 200910206579A CN 101725711 A CN101725711 A CN 101725711A
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Abstract
The invention provides a spacer. PTFE slices are laminated on two surfaces of metal thin plates with wavelike sections as the core material. The spacer is improved be more easily produced and has excellent sealing performance and is capable of being used in an oxidizability fluid and produced in batch. The spacer comprises wavelike circular metal thin plates (1) with concentric circle or approximate concentric circle shaped sections viewed from the axle core direction (X) and PTFE slices (2),(3) are respectively laminated on the two surfaces of the metal thin plates (1), wherein the thickness of the PTFE slices (2),(3) is set to be above the wave height (h) of the metal thin plate (1) and below 2.5 times of the wave height (h).
Description
Technical field
The present invention relates to a kind of mainly is to be used in the pipe arrangement in chemical industry field, the suitable pad of position that is difficult to use common gasket sheet that is used in acid, alkali, solvent etc.
Background technique
As such pad, the applicant had before proposed a kind of pad, it is to fill the powder sealing material in the paddy portion of the sheetmetal with concentrically ringed waveform, the pad that stacked bonding PTFE sheet with sealing forms on two surfaces of the sheetmetal of filling this powder sealing material (below, be called " the previous pad that proposes ").This pad, be as remedy the use expanded graphite sheet that accounts for main flow at that time pad (below, be called " prior art pad ") shortcoming, promptly, the pad that remedies the shortcoming of " owing to use the expanded graphite sheet as sealing material; though can use, be difficult to use, be restricted " in the non-oxidizable fluid of the temperature below 400 ℃ in oxidative fluid on purposes is developed.As the pad of prior art, for example, known in patent documentation 1 disclosed pad.
In addition, the prior art pad is by sheetmetal with concentrically ringed waveform and the structure that constitutes as the stacked respectively bonding expanded graphite sheet of sealing material on its two surface.The prior art pad, the core that becomes discontinuous sheet metal concavo-convex or that profile of tooth is concavo-convex to constitute as metal plate or two surface Machining, use has the sheetmetal of concentrically ringed waveform, thus, has following advantage: can guarantee the distortion tracing ability (for the tracing ability of flanged surface precision) that in having warp or up-and-down enamel flange, also can use even compressibility rapidly improves and has.In addition, two surfaces that contact with flange form by mobile high expanded graphite sheet, have also guaranteed to have excellent compatibility with flange.
Herein, as a reference, with reference to the compressive strain process shown in Fig. 8 (A)～(C), explanation in advance use the PTFE sheet previous proposition pad structure (with reference to Fig. 7) and make it that principle of seal action take place.As shown in Figure 7, the previous pad 10 that proposes, on the front surface and two surfaces, the back side of the sheetmetal 11 of the waveform of filling powder sealing material 14 on the 11a of paddy portion, stacked bondingly have the circular PTFE sheet 12,13 of sealing and constitute.At first, under the free state before the clamping shown in Fig. 8 (A), implement the sheetmetal 11 of section waveform, have ripple pitch p, thickness height T, PTFE sheet 12,13 has homogeneous thickness d on all, between the 11a of paddy portion of sheetmetal 11 and the PTFE sheet 12,13 (part in space of the prior art), be filled with packing material 14.
Clamp under the low clamped condition that bears a heavy burden in that the load of Fig. 8 (B) is low, between relative flange 50,60 on thickness direction compression gasket 10.Sheetmetal 11 is along with thickness height T's dwindles, and ripple pitch p enlarges, and compressive strain takes place on thickness direction and go up the generation elongation strain in face direction (interior external diameter direction). PTFE sheet 12,13, on the peak of sheetmetal 11 11b of, on thickness direction, be compressed, and, owing on the 11a of paddy portion of sheetmetal 11, be filled with packing material 14, on the 11a of paddy portion of sheetmetal 11, also be compressed, thereby on all surfaces of the peak of sheetmetal 11 11b of and the 11a of paddy portion, guarantee the gripping surface pressure, the sealability that can play stably.In addition, 11c, 11d are the pars.
Clamp under the high clamped condition that bears a heavy burden in that the load of Fig. 8 (C) is high, between relative flange 50,60 on thickness direction further compression gasket 10.Sheetmetal 11 is along with thickness height T's further dwindles, and ripple pitch p further enlarges, compressive strain further taking place on the thickness direction and elongation strain further taking place on the face direction, until approaching dull and stereotyped state.PTFE sheet 12,13, on the peak of sheetmetal 11 11b of, on thickness direction, further be compressed, and, owing on the 11a of paddy portion of sheetmetal 11, be filled with packing material 14, on the 11a of paddy portion of sheetmetal 11, also further be compressed, thereby on all surfaces of the peak of sheetmetal 11 11b of and the 11a of paddy portion, further guarantee high gripping surface pressure, can continue to remain on the low stable sealability of bearing a heavy burden and obtaining down that clamps.
So, the previous pad 10 that proposes, because the part of the 11a of paddy portion of the sheetmetal 11 by being filled with packing material 14 landfills space of the prior art, under the low clamping of prior art is born a heavy burden, compress the PTFE sheet 12,13 on the 11a of paddy portion of incoercible sheetmetal 11, low clamp bear a heavy burden under, can guarantee on all surfaces that gripping surface presses, thereby can bear a heavy burden from low clamping obtains stable sealability.Therefore, having can be in low～high effect of guaranteeing stable sealability under the heavy burden for a long time that clamps.
But, the previous pad that proposes, it is very difficult with the operation of packing material to fill sealing on the paddy portion of sheetmetal whole, and needs the plenty of time, aspect producibility problem is arranged.In addition, it also is difficult that the surface that the state that paddy portion is filled with packing material is maintained until sheetmetal covers with the PTFE sheet, though estimated on performance, is not suitable for batch process as product.
Patent documentation 1:JP opens flat 5-92574 communique in fact
Summary of the invention
The present invention is based on above-mentioned truth and the invention made.Its objective is, a kind of pad is provided, this pad follows the structure of stacked outfit PTFE sheet on two surfaces as the sheetmetal with section waveform of core, be enhanced and easily make, and this pad has excellent sealing and have the advantage that also can use in oxidative fluid, and also can be suitable for producing in batches.
The invention of technological scheme 1 of the present invention, it is a kind of pad, it is characterized in that, by looking from the axle center directions X section shape that is concentric circle or approximate concentrically ringed state forms the circular sheetmetal 1 of waveform and the PTFE sheet 2,3 of laminated configuration and constituting respectively on two surfaces of above-mentioned sheetmetal 1, wherein, the thickness d of above-mentioned PTFE sheet 2,3, setting for is that the wave height h of above-mentioned sheetmetal 1 is above and be the scope below 2.5 times of above-mentioned wave height h.
The invention of technological scheme 2 of the present invention is as above-mentioned pad, it is characterized in that, the thickness setting of above-mentioned PTFE sheet 2,3 is more than the 0.3mm and is below the 0.75m.
The invention of technological scheme 3 of the present invention is as above-mentioned pad, it is characterized in that, the ripple pitch p of above-mentioned sheetmetal 1 is set at 4～6 times of above-mentioned wave height h, is preferably set to 5 times.
The invention of technological scheme 4 of the present invention, be as above-mentioned pad, it is characterized in that, the wave height hi that is in the most inboard ripple part 1i of unit of diameter in the above-mentioned sheetmetal 1 and/or be in the wave height hu of the ripple part 1u of the outermost unit of diameter is set at higher slightly than the wave height h of other parts 1s beyond the ripple part 1i of unit, the 1u.
The invention of technological scheme 5 of the present invention is as above-mentioned pad, it is characterized in that, wave height hi, the hu of the above-mentioned ripple part 1i of unit, 1u is 1.1～1.3 times of wave height h of above-mentioned other parts 1s, preferably 1.2 times.
The invention of technological scheme 6 of the present invention is as above-mentioned pad, it is characterized in that, above-mentioned sheetmetal 1 is to be formed by stainless-steel sheet.
Invention according to technological scheme 1 of the present invention, its detailed situation will be narrated in the embodiment part, it is in user mode, the face in order to obtain effective seal in the peak portion of being positioned in the PTFE sheet presses high thin part can not break and retain, simultaneously, landfill paddy portion, thus the face pressure as pad is also had an effect on this part.Therefore, need be in prior art (previous propose pad) powder of the paddy portion of essential landfill sheetmetal, do not need yet with this powder be supplied in advance sheetmetal each paddy portion making operation (operation) and the powder of supplying with kept so that it not in the operation (operation) that comes off between stacked PTFE sheet, can make producibility significantly improve and make cost to reduce.
Consequently, a kind of pad can be provided, this pad follows the structure of stacked outfit PTFE sheet on two surfaces as the sheetmetal with section waveform of core, be enhanced and easily make, and this pad has excellent sealing and have the advantage that also can use in oxidative fluid, and also can be suitable for producing in batches.As its real numerical value, invention according to technological scheme 2 of the present invention, the thickness setting of preferred above-mentioned PTFE sheet is more than the 0.3mm and is below the 0.75m, in addition, invention according to technological scheme 3 of the present invention, the ripple pitch of preferred above-mentioned sheetmetal is set at 4～6 times of wave height, is preferably set to 5 times.In addition, consider that from aspects such as Strong degree or corrosion resistances according to the invention of technological scheme 6 of the present invention, the preferable alloy thin plate is to be made by stainless steel.
Invention according to technological scheme 4 of the present invention, owing to be set at the diameter wave height the most inboard or the outermost unit of diameter ripple part that is in the sheetmetal higher slightly than the wave height of other parts beyond this unit ripple part, can improve the diameter inner end of pad or the face of diameter outboard end and press, can be provided at the pad that the sealing on the diametric(al) end further improves.Under this situation, shown in the invention of technological scheme 5 of the present invention, consider that the wave height of the unit ripple part of preferred diametric(al) end is 1.1～1.3 times of wave height of above-mentioned other parts, preferably 1.2 times from improving the sealing aspect.
Description of drawings
Fig. 1 is the planimetric map of embodiment 1 pad.
Fig. 2 is the a-a line sectional drawing of Fig. 1 of the structure of expression pad.
Fig. 3 is the sectional drawing of the situation of pad under the user mode of compression of presentation graphs 1.
Fig. 4 is the sectional drawing of diametric(al) end of the parameter of expression wave height of sheetmetal and pitch etc.
Fig. 5 is the parameter list of the data of various embodiments of expression and various comparative examples.
Fig. 6 is the judgment standard table about the data of Fig. 5.
Fig. 7 is the half-sectional view of structure of the pad of expression prior art.
Fig. 8 is the compressive strain process of the pad of expression prior art, and (A) expression free state, the low clamped condition of (B) expression, (C) represent high clamped condition.
The explanation of reference character
1 sheetmetal
1i is in the most inboard unit ripple part (the most inboard ripple part) of diameter
1u is in the outermost unit of diameter ripple part (outermost ripple part)
Other parts beyond 1s unit's ripple part
The 2PTFE sheet
The 3PTFE sheet
The G pad
The X-axis heart
The thickness of d PTFE sheet
The wave height of h sheetmetal (wave height of other parts)
Hi is in the wave height of the most inboard unit ripple part of diameter
Hu is in the wave height of the outermost unit of diameter ripple part
The ripple pitch of p sheetmetal
Embodiment
Below, with reference to the mode of execution of description of drawings pad of the present invention.Fig. 1 is that planimetric map, Fig. 2 of pad is that to be to use half-sectional view, the Fig. 4 of the pad in the state be that explanatory drawing, Fig. 5 and 6 of the various parameters of definition sheetmetal is expression embodiment and the performance data of comparative example or the table of judgment standard for half-sectional view, the Fig. 3 of the pad in the free state.
Pad G of the present invention, as shown in Figure 1 and Figure 2, by the section shape of looking the state that is concentric circle (or approximate concentric circle) from the axle center directions X form the circular sheetmetal 1 of continuous waveform, the PTFE sheet 2,3 of laminated configuration constitutes respectively on two surfaces of sheetmetal 1.Have the sheetmetal 1 of waveform section, be also referred to as " corrugated sheet ", by formation such as stainless-steel sheets.The thickness d of each PTFE sheet 2,3, setting for is that the wave height h of sheetmetal 1 is above and be the scope below 2.5 times of wave height h.
As shown in Figure 4, the wave height h of sheetmetal 1 is all thickness of sheetmetal 1 from free state, that is, thickness height T deducts the value (h=T-t) of thickness of slab t.Pitch p is De Ju From between the 1a of paddy portion adjacent on the diametric(al) in arbitrary surface at the front surface or the back side or between the 1b of peak portion.The ripple pitch p of sheetmetal 1 is set at 4～6 times of (4h≤p≤6h), be preferably set to p=5h of wave height h.
In addition, be in the most inboard unit ripple part of diameter (promptly in the sheetmetal 1, the most inboard ripple part) the wave height hi of 1i and be in the outermost unit of diameter ripple part (promptly, outermost ripple part) the wave height hu of 1u, be set at higher slightly than the wave height hs of other parts (that is main ripple the part) 1s beyond the ripple part 1i of unit, the 1u.Particularly, be 1.1 * 1s≤1i≤1.3 * 1s, 1.1 * 1s≤1u≤1.3 * 1s, be preferably set to 1i=1u=1.2 * 1s.Detailed content is described below as described later herein: the wave height by making these the most inboard ripple part 1i or outermost ripple part 1u is higher slightly than other parts, can help further to improve the sealing as pad G.In addition, the imaginary line among Fig. 4 has been expressed unit ripple part (1i, 1u) and the identical situation of main ripple part 1s wave height (h).
The diameter inner end of PTFE sheet 2,3 is overlapping and integrated, as the connection of this incorporate part portion 4 is set and constitutes pkt. flap bodies 5, PTFE sheet the 2, the 3rd, the part of this pkt. flap body 5 with a pair of PTFE sheet 2,3.This pkt. flap body 5 omits in diagram, and it is to make by the limit to have the circular PTFE plate rotation that connects the thickness that portion 4 is set, and cut to thickness central authorities with cutting knife from peripheral end on the limit, only stays the diameter inner end and makes.Therefore, PTFE sheet 2,3 is to be formed by connecting at the diameter medial extremity to be one, still, but also for example will pass through bonding between the diameter inner end of 2 PTFE sheets 2,3 and incorporate structure.
Each PTFE sheet the 2, the 3rd has identical thickness, and its thickness d is to be set at more than the wave height h of sheetmetal 1, and (h≤d≤2.5 * h) of the scope below 2.5 times of wave height h.That is, when wave height h is 0.3mm, 0.3mm≤d≤0.75mm.These will be put down in writing in the back, be described below: along with the compression of pad G, on the 1a of paddy portion of the sheetmetal 1 of wave height h step-down, the PTFE sheet 2,3 of good fluidity flows to the effect of playing landfill herein, therefore, need at least with free state in the equal thickness d of wave height h.
Wherein, PTFE sheet 2,3 thickenings, then under the user mode of compression, because good fluidity, PTFE sheet 2,3 moves excessively on diametric(al), might produce and overflow, and creep also becomes remarkable simultaneously.In addition, cost also significantly improves.Because above-mentioned factor preferably can be suppressed at below 2.5 times of wave height realistically.This (reason of h≤d≤2.5 * h) that is above-mentioned.
Pad G under the user mode, as shown in Figure 3, be between relative a pair of flange 6,7 on thickness direction compressed state, along with the attenuating of the wave height h of sheetmetal 1, ripple pitch p increases, thickness height T compares attenuation clearly with free state.Each PTFE sheet 2,3, be compressed and the thickness attenuation simultaneously of on diametric(al), flowing in the position that the 1b of peak portion with sheetmetal 1 joins, and, the position that is positioned at the 1a of paddy portion is owing to the material that comes that flows from the position that joins with the 1b of peak portion causes the thickness increase, thus, compare with free state, the 1a of paddy portion of landfill height step-down obtains state very close to each other on thickness direction.
In addition, omit though the pad G from as shown in Figure 2 free state is proceeded to the changing condition (state midway) of the pad G of user mode as shown in Figure 3, can think that the low clamped condition (with reference to Fig. 8 (B)) that bears a heavy burden that clamps of load of pad (with reference to Fig. 7) of this sheetmetal 1 and PTFE sheet 2,3 and aforesaid previous proposition similarly changes.In addition, the section shape of sheetmetal 1 as shown in Figure 3 can be described its situation with as shown in Figure 2 free state for convenience's sake comparably, and in fact, as previously mentioned, wave height h takes place to reduce and ripple pitch p increases.
In the user mode as shown in Figure 3,, can effectively utilize the Spring effect of the face of the giving pressure that on section sheetmetal 1 in wave shape, produces owing in the thickness of pad G, there is not the space.Simultaneously, owing to cover the good flowability that the PTFE sheet 2,3 on two surfaces of sheetmetal 1 is kept, promptly, in the 1b of peak portion, reduce thickness and in the 1a of paddy portion, increase the character of thickness, as two surperficial 2a, the equal planarization of 3a of pad G, the surface 8,9 of itself and each flange 6,7 has good connecting airtight property.
Promptly, because (the ripple pitch p of h≤d≤2.5 * h), sheetmetal 1 is set at 4～6 times of wave height h (4h≤p≤6h) will to be set at suitable scope with the ratio of the thickness d of PTFE sheet 2,3, in user mode, the high thin part of face pressure in order to obtain effective seal on the 1b of the peak portion that is positioned in the PTFE sheet 2,3 can not broken and be retained, simultaneously, the landfill paddy 1a of portion, thus on this part as the surface 8,9 of each surperficial 2a, 3a of pad G and each flange 6,7 between also generating plane pressure effect.
Therefore, the powder that can not need the 1a of paddy portion that is used for landfill sheetmetal 1 of prior art, thereby do not need that its powder is supplied to the making operation (operation) of each 1a of paddy portion of sheetmetal 1 in advance and the powder that will supply with is kept so that it is not in the operation (operation) that comes off between stacked PTFE sheet 2,3, thereby, can improve producibility significantly and can reduce cost.
In addition, the diametric end of sheetmetal 1 (promptly, the wave height hi of the most inboard ripple part 1i or the wave height hu of outermost ripple part 1u) be higher slightly and form than other the height h of ripple part 1s, therefore, contact pressure between pad G and each flange 6,7 is further improved in diametric end, can more effectively avoid the possibility that spills, thereby further improve sealing.As the structure of the mode that adopts the wave height that improves the end, can only be diametric inner end (the most inboard ripple part 1i), also can only be outer end (outermost ripple part 1u).
In addition, the wave height of sheetmetal 1 can all be h also, and no matter the wave height of diametric end 1i, 1u how, is defined as h with the wave height of sheetmetal 1.Next, the parameter for the determination data of the various embodiments of pad G and various comparative examples or performance data etc. describes with reference to Fig. 5, Fig. 6.
(embodiment 1)
(embodiment 2)
(embodiment 3)
(comparative example 1)
(comparative example 2)
(comparative example 3)
(comparative example 4)
(comparative example 5)
(comparative example 6)
(comparative example 7)
(comparative example 8)
(comparative example 9)
Supplemental characteristic by Fig. 5 and the judgment standard of Fig. 6 as can be known, the equal sealing characteristics of embodiment 1～3 pad (revealing few characteristic) is good, the compression recovery characteristics is also good, and stress relaxation properties (comprising creep) is also good.That is, can obtain when compression is used the pad G that PTFE sheet (lining material) 2,3 does not break has good (suitable) compression amount of recovery of stable sealing characteristics, appropriateness and little stress mitigation rate.In addition, in the judgment standard table of Fig. 6, only " well " of zero expression is (OK) up to specification, " uneasiness " that △ represents and * represent " can not ", all be to be against regulation (NG) as product.In addition, " lining material " described in Fig. 5,6 is meant PTFE sheet 2,3.
Relative therewith, the thickness of sheetmetal 1, wave height and pitch is all in the pad above embodiment 1～3 comparative example 1～3, and the compression that is accompanied by use produces PTFE sheet 2,3 and breaks etc., and its sealing characteristics and stress relaxation properties all are can not (*).For the compression recovery characteristics, only the comparative example 1 of the thickness the thinnest (d=0.3mm) of PTFE sheet 2,3 is good (zero), and thickness is the comparative example the 2, the 3rd of 0.4mm or 0.5mm, uneasy (△).Therefore, the pad of comparative example 1～3 does not adopt as product.
Next, the wave height of sheetmetal 1 and pitch surpass in embodiment's 1～3 (thickness is identical) the pad of comparative example 4～6, the sealing characteristics that removes comparative example 4 be can not (*), all be uneasiness (△).That is, when clamping by force, lining material (PTFE sheet) breaks or stress relax to become big, the stability shortcoming when using for a long time, thus the pad that yet it can be judged as with comparative example 1～3 does not have practicability equally.
In addition, as a reference, sheetmetal 1 is in the pad of dull and stereotyped comparative example 7～9, and yes, and to lack compression restorative and can not (*), can not be durable under this situation.Describe in passing, its sealing characteristics is uneasy (△), and the stress relaxation properties is good (zero).That is, decrement is too small, estimates that significant creep takes place when at high temperature using for it.
As mentioned above, in embodiment 1～3 pad G, (h≤d≤2.5 * h) become the product that can satisfy whole sealing characteristics, compressive stress characteristic and stress relaxation properties because the ratio of the wave height h of sheetmetal 1 and the thickness d of PTFE sheet 2,3 is set in suitable scope.Relative therewith, (the ripple pitch p of h≤d≤2.5 * h) or sheetmetal 1 is not set at the pad of the comparative example 1～9 of the outer pad of 4～6 times the regulation of the present invention of wave height h the ratio of the wave height h of sheetmetal and the thickness d of PTFE sheet not to be set in suitable scope, in its sealing characteristics, compressive stress characteristic, the stress relaxation properties, there is any one above, can not be suitable for practicality for uneasy (△) or NG (*).
(other embodiment)
Claims (10)
1. pad, by look from axis direction the section shape that is concentric circle or approximate concentrically ringed state forms the circular sheetmetal of waveform and on two surfaces of above-mentioned sheetmetal respectively the PTFE sheet of laminated configuration constitute, the thickness setting of above-mentioned PTFE sheet becomes to be more than the wave height of above-mentioned sheetmetal and to be below 2.5 times of wave height.
2. pad as claimed in claim 1, wherein, the thickness setting of above-mentioned PTFE sheet is more than the 0.3mm and is below the 0.75mm.
3. pad as claimed in claim 1, wherein, the ripple pitch of above-mentioned sheetmetal is set at 4～6 times of above-mentioned wave height.
4. pad as claimed in claim 3, wherein, the ripple pitch of above-mentioned sheetmetal is set at 5 times of above-mentioned wave height.
5. pad as claimed in claim 2, wherein, the ripple pitch of above-mentioned sheetmetal is set at 4～6 times of above-mentioned wave height.
6. pad as claimed in claim 5, wherein, the ripple pitch of above-mentioned sheetmetal is set at 5 times of above-mentioned wave height.
7. as each described pad in the claim 1～6, wherein, wave height that is in the most inboard unit ripple part of diameter in the above-mentioned sheetmetal and/or the wave height that is in the outermost unit of diameter ripple part are set at higher slightly than the wave height of other parts beyond this unit ripple part.
8. pad as claimed in claim 7, wherein, the wave height of above-mentioned unit ripple part is 1.1～1.3 times of wave height of above-mentioned other parts.
9. pad as claimed in claim 8, wherein, the wave height of above-mentioned unit ripple part is 1.2 times of wave height of above-mentioned other parts.
10. pad as claimed in claim 1, wherein, above-mentioned sheetmetal is to be formed by stainless-steel sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-279540 | 2008-10-30 | ||
| JP2008279540A JP4789992B2 (en) | 2008-10-30 | 2008-10-30 | gasket |
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| Publication Number | Publication Date |
|---|---|
| CN101725711A true CN101725711A (en) | 2010-06-09 |
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| CN (1) | CN101725711A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6329773B2 (en) * | 2014-01-22 | 2018-05-23 | ニチアス株式会社 | gasket |
| JP7202329B2 (en) | 2020-05-11 | 2023-01-11 | キヤノントッキ株式会社 | Alignment Apparatus, Film Forming Apparatus, Alignment Method, Electronic Device Manufacturing Method, Program and Storage Medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3601346A1 (en) * | 1986-01-18 | 1987-07-23 | Kempchen & Co Gmbh | Flat seal for flange connections |
| US5558347A (en) * | 1990-12-31 | 1996-09-24 | Specialist Sealing Limited | Seal |
| JPH11351400A (en) * | 1998-06-10 | 1999-12-24 | Nippon Leakless Corp | Compound sheet for gasket and compound gasket using the compound sheet |
| JP2003106456A (en) * | 2001-09-28 | 2003-04-09 | Nippon Valqua Ind Ltd | Fluororesin covered gasket |
| JP2004144119A (en) * | 2002-10-22 | 2004-05-20 | Nippon Reinz Co Ltd | Bead plate for metal gasket and its manufacturing method |
| WO2007082887A1 (en) * | 2006-01-17 | 2007-07-26 | Alfred Jung | Sealing arrangement |
| CN201027970Y (en) * | 2007-03-09 | 2008-02-27 | 艾志(南京)环保垫片预紧材料有限公司 | Wave-shaped live-pressure four-fluorine sealing washer |
| WO2008043400A1 (en) * | 2006-10-06 | 2008-04-17 | Federal-Mogul Sealing Systems Gmbh | Flat seal having a deformation limiter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2614457B2 (en) * | 1986-09-11 | 1997-05-28 | ホーヤ 株式会社 | Laser plasma X-ray generator and X-ray exit opening / closing mechanism |
| JPH02127852U (en) * | 1989-03-30 | 1990-10-22 | ||
| JPH0592574U (en) * | 1991-07-15 | 1993-12-17 | 住友化学工業株式会社 | gasket |
| JP2007154935A (en) * | 2005-12-01 | 2007-06-21 | Nippon Valqua Ind Ltd | Sealing material, manufacturing method for sealing material, and pendulum type gate valve using the sealing material |
| JP4324607B2 (en) * | 2006-08-11 | 2009-09-02 | 日本ピラー工業株式会社 | Non-asbestos gasket |
-
2008
- 2008-10-30 JP JP2008279540A patent/JP4789992B2/en active Active
-
2009
- 2009-10-22 CN CN200910206579A patent/CN101725711A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3601346A1 (en) * | 1986-01-18 | 1987-07-23 | Kempchen & Co Gmbh | Flat seal for flange connections |
| US5558347A (en) * | 1990-12-31 | 1996-09-24 | Specialist Sealing Limited | Seal |
| JPH11351400A (en) * | 1998-06-10 | 1999-12-24 | Nippon Leakless Corp | Compound sheet for gasket and compound gasket using the compound sheet |
| JP2003106456A (en) * | 2001-09-28 | 2003-04-09 | Nippon Valqua Ind Ltd | Fluororesin covered gasket |
| JP2004144119A (en) * | 2002-10-22 | 2004-05-20 | Nippon Reinz Co Ltd | Bead plate for metal gasket and its manufacturing method |
| WO2007082887A1 (en) * | 2006-01-17 | 2007-07-26 | Alfred Jung | Sealing arrangement |
| WO2008043400A1 (en) * | 2006-10-06 | 2008-04-17 | Federal-Mogul Sealing Systems Gmbh | Flat seal having a deformation limiter |
| CN201027970Y (en) * | 2007-03-09 | 2008-02-27 | 艾志(南京)环保垫片预紧材料有限公司 | Wave-shaped live-pressure four-fluorine sealing washer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010106958A (en) | 2010-05-13 |
| JP4789992B2 (en) | 2011-10-12 |
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